From Top, to bottom, left to right; the boxes should be filled as follows;
1. Evolution 2. "analogous structures 3. Homologous structures 4. vestigial structures 5. common functions 6. limbs 7. snakes.
How should the evolution diagram look like?
Evolution
↓
might result in
↓
"analogous Homologous The loss of → such as vestigial structures
structure structure structure
↓ ↓ ↓
if related by if related by such as such as in
↓ ↓ ↓ ↓
common common
functions ansectry limbs snakes